Scholarlink

<p>This study employed acid-microwave synergistic activation to optimize the sepiolite fiber’s structure, boost mechanical toughness, and enhance functional efficacy. The evolution of sepiolite’s composition, apparent properties, and microscopic structure during activation was systematically investigated. The optimization mechanism of sepiolite fibers was elucidated through scanning electron microscopy (SEM), nitrogen adsorption analysis, X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FT-IR). The purity of sepiolite increased by approximately 43.00–10.00% under the experimental conditions of 0.80&#xa0;mol&#xa0;L<sup>−1</sup> hydrochloric acid and 2&#xa0;kW microwave-induced thermal activation for 8&#xa0;min, respectively. Moreover, the Brunauer-Emmett-Teller (BET) specific surface area increased by 43.28–17.06&#xa0;m<sup>2</sup>&#xa0;g<sup>−1</sup>. The sepiolite treated by the acid-microwave protocol exhibited an increased specific surface area and enhanced fiber dispersion, indicating superior adsorption capabilities and cementation properties. These enhancements are important for fabricating thermal insulation materials and using sepiolite in the domain of building materials, providing valuable insights and a robust theoretical underpinning for the development of mineral-based materials. Additionally, this study provides a pivotal reference and theoretical foundation for the synthesis of mineral materials employing sepiolite as a key raw material.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Optimization of Sepiolite Active Fibers Via Acid-Microwave Synergistic Treatment

  • 期刊论文

  • 发表日期：

    2026年6月1日

查看全文
  • Yiwen Ma,
  • Xin Sun,
  • Mengke Zheng,
  • Fuxing Yao,
  • Jinghui Sun,
  • Yanbing Zhang

摘要

This study employed acid-microwave synergistic activation to optimize the sepiolite fiber’s structure, boost mechanical toughness, and enhance functional efficacy. The evolution of sepiolite’s composition, apparent properties, and microscopic structure during activation was systematically investigated. The optimization mechanism of sepiolite fibers was elucidated through scanning electron microscopy (SEM), nitrogen adsorption analysis, X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FT-IR). The purity of sepiolite increased by approximately 43.00–10.00% under the experimental conditions of 0.80 mol L−1 hydrochloric acid and 2 kW microwave-induced thermal activation for 8 min, respectively. Moreover, the Brunauer-Emmett-Teller (BET) specific surface area increased by 43.28–17.06 m2 g−1. The sepiolite treated by the acid-microwave protocol exhibited an increased specific surface area and enhanced fiber dispersion, indicating superior adsorption capabilities and cementation properties. These enhancements are important for fabricating thermal insulation materials and using sepiolite in the domain of building materials, providing valuable insights and a robust theoretical underpinning for the development of mineral-based materials. Additionally, this study provides a pivotal reference and theoretical foundation for the synthesis of mineral materials employing sepiolite as a key raw material.